Fix AttributeError while detecting version

[dpedu]

This is #33, rebased per @immunIT's request.

[immunIT]

Hi @dpedu,

I reviewed your pull request and when tested, it triggered the following error (cf. The image attached).

Fix (Fingerprinter.py line 26)

config["version"] = float(version.group(0)) by config["version"] = float(matched.group(0))

By the same token would you mind rebase your branch on the official repository ? Some changes have been applied recently.

Thanks again for your support.
Best,